Late that year he and a half-dozen or so colleagues gathered in a New York conference room for a presentation on the performance of the online ads. They were stunned. Digital’s return on investment was around 2 to 1, a $2 increase in revenue for every $1 of ad spending, compared with at least 6 to 1 for TV. The most startling finding: Only 20 percent of the campaign’s “ad impressions”—ads that appear on a computer or smartphone screen—were even seen by actual people.

“The room basically stopped,” Amram recalls. The team was concerned about their jobs; someone asked, “Can they do that? Is it legal?” But mostly it was disbelief and outrage. “It was like we’d been throwing our money to the mob,” Amram says. “As an advertiser we were paying for eyeballs and thought that we were buying views. But in the digital world, you’re just paying for the ad to be served, and there’s no guarantee who will see it, or whether a human will see it at all.”